public class Demo1 {
    private  static int result;
    public static void main(String[] args) throws InterruptedException {
        Thread t=new Thread(()->{
            int sum=0;
            for (int i = 0; i < 1000; i++) {

                sum+=i;
            }
            result=sum;
        });
        t.start();
        t.join();
        System.out.println("result"+result);
    }
}
